CN104682429B - Voltage source inverter parallel control system - Google Patents
Voltage source inverter parallel control system Download PDFInfo
- Publication number
- CN104682429B CN104682429B CN201510058020.9A CN201510058020A CN104682429B CN 104682429 B CN104682429 B CN 104682429B CN 201510058020 A CN201510058020 A CN 201510058020A CN 104682429 B CN104682429 B CN 104682429B
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- reference signal
- phase
- voltage source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007665 sagging Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 11
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 2
- 235000008434 ginseng Nutrition 0.000 claims 2
- 238000003079 width control Methods 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Abstract
The invention discloses a voltage source inverter parallel control system. The voltage source inverter parallel control system comprises a plurality of voltage source inverter modules connected in parallel; each voltage source inverter module comprises a voltage source, a three-phase inverter main circuit and an LC filter circuit which are connected sequentially; the voltage source inverter modules are further connected to a load with a switch; the system further comprises a current acquiring module, a first voltage acquiring module, a second voltage acquiring module, a reference signal computing module, a phase synchronizing module and a voltage reference signal generating module, as well as a control module used for controlling the switch of the three-phase inverter according to the voltage reference signal, filter inductive current, and a pulse control signal generated according to voltage and carrier voltage output by the voltage source inverter modules. The voltage source inverter parallel control system has higher stability and reliability.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of voltage source inverter parallel control system.
Background technology
With the fast development of national economy, people are increasing to the demand of electric power, the scale and long distance of electrical network
Power capacity from conveying is constantly increasing.Now, centralized bulk power grid high cost, operation difficulty are big, reliability is low lacks
Fall into and will day by day highlight with the expansion of electrical network scale, can not increasingly meet quality and electrical safety of the people to supply of electric power
With the requirement of reliability.In recent years, the massive blackout accident for being caused by Single Point of Faliure in electrical network occurs again and again, fully exposes
The fragility of bulk power system, power supply reliability problem has caused the great attention of various countries personnel.Additionally, centralized bulk power grid
Electricity generation system can not track the change of electric load, and the flexibility of system is relatively poor.If build for of short duration peak load generating electricity
Factory, required cost is very big, and economic benefit is very low.In order to reduce investment outlay, security and the flexibility of electricity generation system is improved, it is distributed
Electricity generation system is arisen at the historic moment.
Distributed power generation be otherwise known as distributing generate electricity or distributed power supply, refer to by be directly arranged at power distribution network or
Person is distributed in the power generating equipment economy near load, efficiently and reliably generates electricity.Each generating equipment phase in distributed generation system
It is mutually independent, its security reliability is drastically increased, compensate for the deficiency of bulk power grid stability.Also, distributed generation system
Build and installation cost is relatively low, transmission ＆ distribution electrical loss is relatively low for bulk power grid.Meanwhile, distributed generation system peak regulation
Can be good, it is simple to operate, it is that the strong of bulk power grid is supplemented and effective support.And with new forms of energy such as solar energy, wind energy, tide energies
Greatly develop, distributed generation system has obtained great application.Thus, distributed generation system will be present and following one
All in vital position in national electricity consumption in the section time.
With the fast development of distributed power generation, more and more higher is required to capacity, performance, extensibility etc..Inverter
Used as the core generating equipment in distributed generation system, it is developed into necessarily to become from centrally connected power supply to distributed parallel operation
Gesture, while inverter parallel technology is distributed generation system realizes high reliability, high redundancy, high power capacity and enhanced scalability
Basis, be also the key point of distributed generation system stable operation.
But current inverter reliability and stability are not high, the less stable especially in switching.
The content of the invention
The technical problem to be solved is, there is provided a kind of voltage source inverter parallel control system, stability
And better reliability.
In order to solve above-mentioned technical problem, the invention provides a kind of voltage source inverter parallel control system, if including
The voltage source inverter module of dry doubling connection, each voltage source inverter module includes voltage source, three contraries being sequentially connected
Become device main circuit and LC filter circuits, the voltage source inverter module is additionally coupled to the load with switching switch, the system
System also includes：
Current acquisition module, for gathering the filter inductance electric current of the LC filter circuits；
First voltage acquisition module, for gathering the voltage of the voltage source inverter module output；
Second voltage acquisition module, for gathering the voltage of the connection common point of the voltage source inverter module；
Reference signal computing module, for what is exported according to the filter inductance electric current and the voltage source inverter module
Voltage is calculated the amplitude information and frequency information of voltage reference signal；
Phase synchronization module, for the voltage that gathered according to the second voltage acquisition module and the voltage reference signal
Frequency information phase place is synchronized, generate the phase information of the voltage reference signal；
Voltage reference signal generation module, for being generated according to the amplitude information of the voltage reference signal and phase information
Voltage reference signal；
Control module, for according to the voltage reference signal, the filter inductance electric current, the voltage source inverter mould
The voltage and carrier voltage of block output produces pulse control signal, controls the switch of the three-phase inverter.
Further, the reference signal computing module 105 is specifically included：
Power calculation unit, for the voltage exported according to the filter inductance electric current and the voltage source inverter module
It is calculated active power and reactive power；Wherein, po=uoABC·iABC, qo=uoABC·(-j)·iABC, poRepresent wattful power
Rate, qoRepresent reactive power, uoABCRepresent the voltage of the voltage source inverter module output, iABCRepresent filter inductance electric current；
Amplitude computing unit, for being calculated electricity according to the reactive power and contravarianter voltage-idle sagging curve
The amplitude information of pressure reference signal；Wherein, Vref=V*-qo·kv, VrefRepresent the amplitude information of voltage reference signal, V*It is inverse
Become maximum voltage corresponding in device voltage-idle sagging curve, kvFor voltage-idle sagging coefficient；
Frequency computing unit, for being calculated electricity according to the active power and inverter frequency-active sagging curve
The frequency information of pressure reference signal；Wherein, fref=f*-po·kf+ △ f, frefRepresent the frequency information of voltage reference signal, f*
Represent peak frequency corresponding in inverter frequency-active sagging curve, kfRepresent frequency-active sagging coefficient.
Further, the Phase synchronization module is specifically included：
Phase locking unit, the voltage subtraction for gathering from the second voltage acquisition module goes out its phase information；
Pre-synchronization unit, for the phase information of voltage that gathered according to the second voltage acquisition module and locking phase
The phase information of computing unit output is calculated frequency adjusting signals；Wherein,
△ f represent frequency adjusting signals, θpccRepresent second voltage acquisition module
The phase information of the voltage of collection, θoRepresent that locking phase calculates the phase information of unit output, kpRepresent and adjust proportionality coefficient,
kiRepresent and adjust integral coefficient；
Locking phase calculates unit, for according to the frequency information of the voltage reference signal and the frequency adjusting signals
It is calculated the phase information of voltage reference signal；Wherein,
Further, the voltage reference signal generation module according to the amplitude of the voltage reference signal specifically for believing
Breath and phase information generate voltage reference signal；Wherein, vr=Vref·sin(θ0), vrRepresent voltage reference signal.
Further, the control module is specifically included：
Modulated signal computing unit, for the filter inductance in the voltage reference signal, the LC filter circuits
Electric current and the voltage of voltage source inverter module output produce modulated signal；Wherein, vm=vr-iABCR, vmRepresent modulation
Signal voltage；
Control unit, for carrying out pulsewidth modulation to carrier voltage according to the modulated signal voltage, so as to produce pulse
Control signal, the switch of the control control three-phase inverter.
Implement the present invention, have the advantages that：The present invention is by multiple stage inverter parallel, modules shared system
System power, the current stress that its power device is born is reduced, and reliability is improved.Additionally, every inverter capacity is relatively small,
Volume and weight is reduced, it is easy to accomplish modularization, reduces production and the maintenance cost of system.Phase synchronization mechanism is added,
When inverter switches, dynamic response is good, keeps system stable operation, therefore reliability and stability are more preferable.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the system block diagram of the one embodiment for the voltage source inverter parallel control system that the present invention is provided；
Fig. 2 is the concrete structure schematic diagram of Fig. 1；
Fig. 3 is the current waveform of the embodiment of the present invention two inverter output in system emulation situation 1；
Fig. 4 is the voltage waveform that embodiment of the present invention inverter in system emulation situation 1 exports common point；
Fig. 5 is the current waveform of the embodiment of the present invention two inverter output in system emulation situation 2；
Fig. 6 is the voltage waveform that embodiment of the present invention inverter in system emulation situation 2 exports common point；
Fig. 7 is the current waveform of the embodiment of the present invention two inverter output in system emulation situation 3；
Fig. 8 is the voltage waveform that embodiment of the present invention inverter in system emulation situation 3 exports common point.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is the system block diagram of the one embodiment for the voltage source inverter parallel control system that the present invention is provided, including
Some voltage source inverter modules 101 in parallel, each voltage source inverter module 101 includes the voltage source being sequentially connected
Uin, three-phase inverter main circuit and LC filter circuits, the voltage source inverter module 101 is additionally coupled to switching switch S
Load, the system also includes：
Current acquisition module 102, for gathering the filter inductance electric current i of the LC filter circuitsABC；
First voltage acquisition module 103, for gathering the voltage u of the output of voltage source inverter module 101oABC；
Second voltage acquisition module 104, for gathering the voltage of the connection common point of the voltage source inverter module 101
uABC(pcc)；
Reference signal computing module 105, for according to the filter inductance electric current iABCWith the voltage source inverter module
The voltage u of 101 outputsoABCIt is calculated the amplitude information V of voltage reference signalrefWith frequency information fref；
Phase synchronization module 106, for the voltage u gathered according to the second voltage acquisition module 104ABC(pcc)With it is described
The frequency information f of voltage reference signalrefPhase place is synchronized, phase information θ of the voltage reference signal is generatedo；
Voltage reference signal generation module 107, for according to the amplitude information V of the voltage reference signalrefWith phase place letter
Breath θoGenerate voltage reference signal vr；
Control module 108, for according to the voltage reference signal vr, the filter inductance electric current iABC, the voltage source
The voltage u of the output of inverter module 101oABCWith carrier voltage vcPulse control signal d is produced, the three-phase inverter is controlled
Switch.
Wherein, with reference to Fig. 2, the reference signal computing module is specifically included：
Power calculation unit, for according to the filter inductance electric current iABCExport with the voltage source inverter module 101
Voltage uoABCIt is calculated active power poWith reactive power qo；Wherein, po=uoABC·iABC, qo=uoABC·(-j)·
iABC；
Amplitude computing unit, for according to reactive power qoIt is calculated with contravarianter voltage-idle sagging curve
The amplitude information V of voltage reference signalref；Wherein, Vref=V*-qo·kv, V*For institute in contravarianter voltage-idle sagging curve
Corresponding maximum voltage, kvFor voltage-idle sagging coefficient；
Frequency computing unit, for according to active power poIt is calculated with inverter frequency-active sagging curve
The frequency information f of voltage reference signalref；Wherein, fref=f*-po·kf+ △ f, f*Represent inverter frequency-active lower whip
Corresponding peak frequency, k in linefRepresent frequency-active sagging coefficient.
Wherein, with reference to Fig. 2, the Phase synchronization module 106 is specifically included：
Phase locking unit, for the voltage u gathered from the second voltage acquisition module 104ABC(pcc)Extract its phase place letter
Breath θpcc；
Pre-synchronization unit, phase information θ of the voltage for being gathered according to the second voltage acquisition module 104pccWith it is same
Phase information θ of step phase calculation unit outputoIt is calculated frequency adjusting signals △ f；Wherein,
kpRepresent and adjust proportionality coefficient, kiRepresent and adjust integral coefficient；
Locking phase calculates unit, for according to the frequency information f of the voltage reference signalrefAdjust with the frequency
Signal △ f are calculated phase information θ of voltage reference signalo；Wherein,
Wherein, the voltage reference signal generation module 107 according to the amplitude of the voltage reference signal specifically for believing
Breath VrefWith phase information θoGenerate voltage reference signal vr；Wherein, vr=Vref·sin(θ0)。
Wherein, the control module 108 is specifically included：
Modulated signal computing unit, for according to the voltage reference signal vr, filtered electrical in the LC filter circuits
Inducing current iABCWith the voltage u of the voltage source inverter module 101 outputoABCProduce modulated signal vm；Wherein, vm=vr-
iABCR, vmRepresent modulated signal voltage；
Control unit, for according to the modulated signal voltage vmTo carrier voltage vcPulsewidth modulation is carried out, so as to produce arteries and veins
Rush control signal d, the switch of the control control three-phase inverter.
A kind of correctness to illustrate the invention and feasibility, the voltage source inverter parallel control system to being proposed enters
Emulation experiment checking is gone, wherein emulation is divided into two inverters starts shooting that successively input is simultaneously for parallel running and two inverters simultaneously
Two kinds of situations of through transport row.Simulation parameter is：Two inverter rated output powers are 40kW, DC input voitage UinIt is
600VDC, inverter output inductor LfIt is 1mH, output filter capacitor CfIt is 50 μ F (triangular form connection).
Emulation scenarios 1：Two inverters are started shooting parallel running simultaneously, wherein in two inverter parallels of t=0.4s moment
System load power is by 20kW impacts to 40kW.
Fig. 3 is the current waveform of two inverter output, and Fig. 4 is the voltage waveform that inverter exports common point.
Emulation scenarios 2：Two inverters are started shooting simultaneously again parallel running, wherein in two inverters of t=0.4s moment
Parallel system bearing power is unloaded to 20kW by 40kW is prominent：Fig. 5 is the current waveform of two inverter output, and Fig. 6 is that inverter is defeated
Go out the voltage waveform of common point.
The simulation waveform that Fig. 3,4,5,6 are given shows that under the control based on the present invention, two inverter parallel systems are simultaneously
The start fine bearing power that must realize of operation is divided equally, at the same load impact it is prominent unload when, parallel system is respectively provided with dynamic well
State is responded, and inverter parallel system keeps stable operation.
Emulation scenarios 3：When finally by two inverter priority putting into parallel operations, wherein individually band is negative for First inverter
Power 40kW operations are carried, in second inverter of t=0.2s moment shared bearing power is put into.
Fig. 7 is the current waveform of two inverter output, and Fig. 8 is the voltage waveform that inverter exports common point.
The simulation waveform that Fig. 7 and Fig. 8 are given shows, under the control based on the present invention, two inverters successively put into parallel connection
The same fine bearing power that must realize is divided equally during operation, while second inverter input moment, electricity does not occur in system
Stream overshoot phenomenon, inverter realizes smooth incision well, and whole inverter parallel system remains stable operation.
Implement the present invention, have the advantages that：The present invention is by multiple stage inverter parallel, modules shared system
System power, the current stress that its power device is born is reduced, and reliability is improved.Additionally, every inverter capacity is relatively small,
Volume and weight is reduced, it is easy to accomplish modularization, reduces production and the maintenance cost of system.Phase synchronization mechanism is added,
When inverter switches, dynamic response is good, keeps system stable operation, therefore reliability and stability are more preferable.
It should be noted that herein, term " including ", "comprising" or its any other variant are intended to non-row
His property is included, so that a series of process, method, article or device including key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
Also there is other identical element in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In several embodiments provided herein, it should be understood that disclosed system and method can pass through it
Its mode is realized.For example, system embodiment described above is only schematic, for example, the division of the unit, and only
Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied
Close or be desirably integrated into another system, or some features can be ignored, or do not perform.It is another, it is shown or discussed
Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or unit or logical
Letter connection, can be electrical, mechanical or other forms.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can with electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate hardware and
The interchangeability of software, according to function has generally described the composition and step of each example in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can use different methods to realize described function to each specific application, but this realization should not
Think beyond the scope of this invention.
The step of method described with reference to the embodiments described herein or algorithm, directly can be held with hardware, processor
Capable software module, or the combination of the two is implementing.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In field in known any other form of storage medium.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (3)
1. a kind of voltage source inverter parallel control system, including some voltage source inverter modules in parallel, each electricity
Potential source inverter module includes voltage source, three-phase inverter main circuit and the LC filter circuits being sequentially connected, and the voltage source is inverse
Become device module and be additionally coupled to the load with switching switch, it is characterised in that the system also includes：
Current acquisition module, for gathering the filter inductance electric current of the LC filter circuits；
First voltage acquisition module, for gathering the voltage of the voltage source inverter module output；
Second voltage acquisition module, for gathering the voltage of the connection common point of the voltage source inverter module；
Reference signal computing module, for the voltage exported according to the filter inductance electric current and the voltage source inverter module
It is calculated the amplitude information and frequency information of voltage reference signal；
Phase synchronization module, for the voltage that gathered according to the second voltage acquisition module and the frequency of the voltage reference signal
Rate information is synchronized to phase place, generates the phase information of the voltage reference signal；
Voltage reference signal generation module, for generating voltage according to the amplitude information of the voltage reference signal and phase information
Reference signal；
Control module, for defeated according to the voltage reference signal, the filter inductance electric current, the voltage source inverter module
The voltage for going out and carrier voltage produce pulse control signal, control the switch of the three-phase inverter；
The reference signal computing module is specifically included：
Power calculation unit, the voltage for being exported according to the filter inductance electric current and the voltage source inverter module is calculated
Obtain active power and reactive power；Wherein, po=uoABC·iABC, qo=uoABC·(-j)·iABC, poRepresent active power, qo
Represent reactive power, uoABCRepresent the voltage of the voltage source inverter module output, iABCRepresent filter inductance electric current；
Amplitude computing unit, for being calculated voltage ginseng according to the reactive power and contravarianter voltage-idle sagging curve
Examine the amplitude information of signal；Wherein, Vref=V*-qo·kv, VrefRepresent the amplitude information of voltage reference signal, V*For inverter
Corresponding maximum voltage, k in voltage-idle sagging curvevFor voltage-idle sagging coefficient；
Frequency computing unit, for being calculated voltage ginseng according to the active power and inverter frequency-active sagging curve
Examine the frequency information of signal；Wherein, fref=f*-po·kf+ Δ f, frefRepresent the frequency information of voltage reference signal, f*Represent
Corresponding peak frequency, k in inverter frequency-active sagging curvefRepresent frequency-active sagging coefficient；
The Phase synchronization module is specifically included：
Phase locking unit, the voltage subtraction for gathering from the second voltage acquisition module goes out its phase information；
Pre-synchronization unit, the phase information of voltage and locking phase for being gathered according to the second voltage acquisition module is calculated
The phase information of unit output is calculated frequency adjusting signals；Wherein,
Δ f represents frequency adjusting signals, θpccRepresent the collection of second voltage acquisition module
The phase information of voltage, θoRepresent that locking phase calculates the phase information of unit output, kpRepresent and adjust proportionality coefficient, kiRepresent
Integral coefficient is adjusted, s represents integral operator；
Locking phase calculates unit, for being calculated according to the frequency information of the voltage reference signal and the frequency adjusting signals
Obtain the phase information of voltage reference signal；Wherein,
2. voltage source inverter parallel control system as claimed in claim 1, it is characterised in that the voltage reference signal life
Voltage reference signal is generated into module specifically for the amplitude information according to the voltage reference signal and phase information；Wherein,
vr=Vref·sin(θ0), vrRepresent voltage reference signal.
3. voltage source inverter parallel control system as claimed in claim 2, it is characterised in that the control module is specifically wrapped
Include：
Modulated signal computing unit, for the filter inductance electric current in the voltage reference signal, the LC filter circuits
Modulated signal is produced with the voltage of voltage source inverter module output；Wherein, vm=vr-iABCR, vmRepresent modulated signal
Voltage, R represents virtual resistance；
Control unit, for carrying out pulsewidth modulation to carrier voltage according to the modulated signal voltage, so as to produce Pulse Width Control
Signal, the switch of the control control three-phase inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058020.9A CN104682429B (en) | 2015-02-04 | 2015-02-04 | Voltage source inverter parallel control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058020.9A CN104682429B (en) | 2015-02-04 | 2015-02-04 | Voltage source inverter parallel control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104682429A CN104682429A (en) | 2015-06-03 |
| CN104682429B true CN104682429B (en) | 2017-04-19 |
Family
ID=53317167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510058020.9A Expired - Fee Related CN104682429B (en) | 2015-02-04 | 2015-02-04 | Voltage source inverter parallel control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104682429B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119309B (en) * | 2015-09-28 | 2017-08-01 | 国家电网公司 | Suitable for the synchronous inverter control system under unbalanced power supply operating mode |
| CN105119323B (en) * | 2015-09-28 | 2017-08-01 | 国家电网公司 | Synchronous inverter control system with secondary voltage regulation and frequency modulation function |
| CN107370193A (en) * | 2017-07-07 | 2017-11-21 | 南京南瑞太阳能科技有限公司 | A kind of voltage source inverter parallel system is idle to divide equally control system and method |
| CN108063428B (en) | 2017-09-23 | 2019-07-12 | 华为技术有限公司 | A kind of apparatus for protecting power supply and the terminal using described device |
| EP3681007B1 (en) * | 2017-09-28 | 2022-08-10 | Huawei Technologies Co., Ltd. | Pwm control signal synchronization method for inverter, inverter, and power grid system |
| CN108459202A (en) * | 2017-12-16 | 2018-08-28 | 西安翌飞核能装备股份有限公司 | A kind of high-precision detecting method of active power and reactive power |
| CN109088439B (en) * | 2018-08-17 | 2022-01-11 | 江苏大学 | Control method of inverter parallel system based on secondary frequency modulation and virtual homopolar generator algorithm |
| CN110957766B (en) * | 2019-12-25 | 2021-03-23 | 杨照龙 | Automatic control equipment based on droop control and control method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001186663A (en) * | 1999-12-27 | 2001-07-06 | Nissin Electric Co Ltd | Power supply |
| CN101917022B (en) * | 2010-08-06 | 2013-05-08 | 南京航空航天大学 | Three-phase inverter capable of working without parallel connection by interconnection lines and control method thereof |
| CN202931221U (en) * | 2012-09-17 | 2013-05-08 | 中国北车股份有限公司大连电力牵引研发中心 | Inverter parallel control system |
-
2015
- 2015-02-04 CN CN201510058020.9A patent/CN104682429B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104682429A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104682429B (en) | Voltage source inverter parallel control system | |
| CN103904676B (en) | The droop control method of a kind of VSC-HVDC | |
| Ding et al. | Control of hybrid AC/DC microgrid under islanding operational conditions | |
| Tenti et al. | Distribution loss minimization by token ring control of power electronic interfaces in residential microgrids | |
| CN107425553A (en) | Idle respectively control system and method based on voltage source inverter parallel system | |
| CN104953801B (en) | Voltage-source type combining inverter current harmonics elimination device and method | |
| CN105119309B (en) | Suitable for the synchronous inverter control system under unbalanced power supply operating mode | |
| CN103904677B (en) | The method for handover control of a kind of VSC-HVDC between networking and decoupled mode | |
| Yao et al. | Distributed control for the modular multilevel matrix converter | |
| CN106300435B (en) | The single-phase multi-inverter parallel system of isolated microgrid and its distributed control method | |
| Moghadasi et al. | A model predictive power control approach for a three-phase single-stage grid-tied PV module-integrated converter | |
| CN103956778A (en) | Micro-grid system and networking method based on phase angle droop control | |
| CN107370193A (en) | A kind of voltage source inverter parallel system is idle to divide equally control system and method | |
| CN106130062B (en) | A kind of two-stage type grid-connected photovoltaic system and intermediate dc side voltage stabilizing method | |
| Prabaharan et al. | An overview of control techniques and technical challenge for inverters in micro grid | |
| Choi et al. | Selective frequency synchronization technique for fast grid connection of islanded microgrid using prediction method | |
| Singh et al. | Simulation of three‐level 24‐pulse voltage source converters‐based static synchronous compensator for reactive power control | |
| Roslan et al. | Centralize control power sharing scheme of parallel connected inverters for microgrids | |
| Mohamed et al. | Reactive power compensation in hybrid AC/DC networks for smart grid applications | |
| Williamson et al. | A controller for single-phase parallel inverters in a variable-head pico-hydropower off-grid network | |
| CN104319818B (en) | A kind of based on the grid-connected of line voltage positive sequence extractor and independent double mode changing method | |
| CN104578860B (en) | A kind of single-phase inverter control system | |
| CN104810841B (en) | PCS energy accumulation current converters V/F and P/Q pattern seamless switching control devices | |
| Milczarek | Harmonic power sharing between power electronics converters in islanded AC microgrid | |
| Bao et al. | Cooperative control strategy of multiple VSGs in microgrid based on adjacent information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Wei Inventor after: Wei Hui Inventor after: Wang Tong Inventor after: Song Fei Inventor after: Ru Xinqin Inventor before: Wei Cheng Inventor before: Wang Tong Inventor before: Song Fei |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160617 Address after: 210000 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant after: State Grid Corporation of China Applicant after: NANJING NARI Group Corp. Applicant after: NANJING NARI SOLAR ENERGY TECHNOLOGY CO.,LTD. Applicant after: NARI TECHNOLOGY Co.,Ltd. Address before: Two high tech Development Zone, Jiangsu, Nanjing, weft Road, 210061 Applicant before: NANJING NARI SOLAR ENERGY TECHNOLOGY CO.,LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160926 Address after: 210000 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant after: State Grid Corporation of China Applicant after: STATE GRID LIAONING ELECTRIC POWER Research Institute Applicant after: NANJING NARI SOLAR ENERGY TECHNOLOGY CO.,LTD. Applicant after: NANJING NARI Group Corp. Applicant after: NARI TECHNOLOGY Co.,Ltd. Address before: 210000 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant before: State Grid Corporation of China Applicant before: NANJING NARI Group Corp. Applicant before: NANJING NARI SOLAR ENERGY TECHNOLOGY CO.,LTD. Applicant before: NARI TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 |